Take-off slide



Jan. 27, 1942. R. B. ass-r TAKE-OFF SLIDE File d Oct. 16, 1940 2Sheets-sheaf. 1

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A iiomey Jan. 27, 1942. V 5 BEST 7 2,2715385 7 TAKE-OFF SLIDE Filed OCt.16, 1940 I 2 Sheets-Sheet 2 gjwwwakt A ttomey Patented Jan. "27, 1942UNITED STATES PATENT OFFICE TAKE-OFF SLIDE Robert B. Best, Great Neck,N. Y.

Application October 16, 1940, Serial No. 361,458 (Cl. 210-201) 2 Claims.

The present invention relates generally to new and useful improvementsin sewage clarifying filters and has for its primary object to provide,in a manner as hereinafter set forth, a take-off slide of a novelconstruction and arrangement for cleanly removing the pulp or cake fromtheretating foraminous drum.

Another very important object of the invention is to provide'a take-offslide of the aforementioned character which is adapted to beconveniently adjusted as desired toward or away from the drum to meetvarious conditions.

Still another very important object of the invention is to provideunique means for spraying water or air on the pulp at a point closelyadjacent that at which said pulp is engaged by the slide to facilitatethe clean removal of said pulp.

Other objects of the invention are to provide a take-off slide of thecharacter set forth which will be comparatively simple in construction,strong, durable, highly efficient and reliable in use, compact and whichmay be manufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein likecharacters of reference designate corresponding parts throughout theseveral views, and wherein:

be seen that the reference numeral I designates a substantially troughshaped tank which is provided with a suitable removable cover 2.Traversing the tank I is the perforated intake end portion of an outletpipe 3. Rotatably mounted on the outlet pipe 3 is a foraminous filteringdrum 4. The inlet to the tank I is indicated at 5.

Mounted in any suitable manner in an upper portion of the tank Iadjacent the inlet end thereof is a plurality of transversely extendingbeams 6. Resting on the beams 6 is an inclined, slidably adjustableplate I of suitable material, preferably metal.

The inclined plate I is adjustable toward and away from the upperportion of the drum 4. Toward this end, rods 8 have one end connected inany suitable manner to the plate I and their other ends anchored in theremote end wall of the tank I. Interposed in the rods 8 are tumbuckles 9for adjusting the plate I. The edge of the plate I which is adjacent thedrum 4 is beveled, as at I0, for cutting the pulp II from the drum 4.

. The reference numeral I2 designates a casing of angular cross sectionhaving one edge hingedly connected at I3 to the lower side of the plate1 for swinging adjustment beneath said plate. The casing I2, inconjunction with the plate 1, defines a chamber I4. On the free edge ofthe casing I2 is mounted a rubber blade I5. Adjusting screws I6 aremounted in the plate I and threadedly engaged with the casing I2 formoving the blade I5 toward or away from said plate for varying the sprayslot or passage II as desired.

Extending through the chamber I4 is a spray pipe I8 the perforations I9of which are directed toward the slot H. The spray pipe I8 extendstransversely across the tank I and merges, at one end, with a supplyline 20'. The supply line 20 includes a ball joint 2| and a suitablecontrol valve 22. At its other end, the spray pipe I8 terminates in anupturned, capped end portion 23 adjacent one side of the tank I.

It'is thought that the operation of the device will be readily apparentfrom a consideration of the foregoing. Briefly, as the foraminous drum 4rotates the pulp II is removed therefrom by the inclined plate I, thepulp that has thus been I beneath and remove said pulp cleanly. Bysimply rotating the turnbuckles 9 the plate I may be conveniently andaccurately adjusted to position the beveled edge I 0 thereof accuratelywith respect to the foraminous drum 4. It may be here said that at notime is the cutting edge In of the adjustable plate I to touch theforaminous drum 4. The fluid from the pipe I8 also serves the purpose ofwashing the pulp or cake down over the inclined plate 'I from the lowerend of which said employed formaintaining the water in the tank I atthe'co'rrect level.

It is believed that the many advantages of a take-ofl slide constructedin accordance with the present invention will be readily understood andalthough a preferred embodiment of the device 10 is as illustrated anddescribed, it is to be understood that changes in the details ofconstruction and in the combination and arrangement of parts may beresorted to which will iall within the scope of the invention asclaimed.

What is claimed is:

1. A take-oil slide for removing pulp from the periphery of a rotarydrum comprising a plate having a cutting'edge disposed close to saidperiphery, a casing of angular cross-section beneath said plate andhaving a bottom converging toward the cutting edge and spaced below thesame whereby said plate and casing form together a gradually restrictedfluid containing chamber having an outlet opening onto said peripherybelow the cutting edge oi the plate for the discharge of fluid underpressure out of the opening beneath the pulp being removed by saidcutting edge, and means to introduce fluid under pressure into saidchamber.

2. A take-oil slide for removing pulp from the periphery of a rotarydrum comprising a plate having a cutting edge disposed close to saidperiphery, a casing of angular cross-section beneath said plate andhaving a bottom converging toward the cutting edge and spaced below thesame whereby said plate and casing form together a gradually restrictedfluid containing chamber 15 having an outlet opening onto said peripherybelow the cutting edge of the plate for the discharge of fluid underpressure out of the opening beneath the pulp being removed by saidcutting edge, means to introduce fluid under pressure into 20 saidchamber, said casing being swingably mounted on the plate for adjustmentinto diflerent positions to vary the size of said outlet.

ROBERT B. BEST.

